out.java

package mold;

import java.util.List;

import java.util.Arrays;

class Histogram {
    public static class Pixel {
        public int r, g, b;

        public Pixel (int r, int g, int b) {
            this.r = r;
            this.g = g;
            this.b = b;
        }

    }

    public static void main (String [] args) {
        List < Pixel > pixels = Arrays.asList (new Pixel (10, 10, 10), new Pixel (120, 120, 120), new Pixel (210, 210, 210), new Pixel (10, 120, 210));
        int [] hR = new int [256];
        int [] hG = new int [256];
        int [] hB = new int [256];
        histogram (pixels, hR, hG, hB);
    }

    @SuppressWarnings("unchecked")
    public static int [] [] histogram (List < Pixel > image, int [] hR, int [] hG, int [] hB) {
        int i = 0;
        {
            labeled_1 : while (i < image.size ()) {
                int r = image.get (i).r;
                int g = image.get (i).g;
                int b = image.get (i).b;
                hR [r] ++;
                hG [g] ++;
                hB [b] ++;
                i += 1;
                {
                    labeled_2 : while (i < image.size ()) {
                        int r = image.get (i).r;
                        int g = image.get (i).g;
                        int b = image.get (i).b;
                        hR [r] ++;
                        hG [g] ++;
                        hB [b] ++;
                        i += 1;
                    }
                }}
        } int [] [] result = new int [3] [];
        result [0] = hR;
        result [1] = hG;
        result [2] = hB;
        return result;
    }

}